基于UG二次开发的齿轮参数化精确建模方法研究

摘要

Precise 3D modeling of cylindrical involute gear include of modifying helical gear wasimplemented which based on generating method with UG NX5.0 secondary development and VC++6.0.It'ssimply for CAD model of gear that generate one tooth based on two sets of tooth profile swept tow guidelines,then array whole teethJn order to achieve accurate modeling,by calculating the number of teeth todetermine which procedure to use the critical transition curve generated,the generated tooth profile accura-cy for complex surface parts of the CAX modeling and analysis provides a new way.%以范成法原理为理论基础,用编程工具V C++6.0对三维软件UG NX5.0进行二次开发,实现了包括变位斜齿轮等各种圆柱渐开线齿轮的三维精确建模.针对目前三维环境下进行三维精确建模过程中存在的问题,选择利用两条引导线与两组齿廓曲线进行扫掠生成单齿,然后进行阵列生成全齿的方法对齿轮进行精确建模,有效简化了CAD模型.为了实现精确建模,通过计算临界齿数确定采用何种程序生成过渡曲线,生成的齿廓准确,为复杂曲面零件的CAX建模与分析提供了新途径.